Did your tester suggest specific accommodations and/or a medication trial for the ADHD? You probably want to follow up with your pediatrician about medication, if any, and set an appointment with the school to talk about the testing. Your DS is clearly going to need accommodations, perhaps working on a computer, extended time, reduced assignment length, etc. and the school has to get on board.
Are you public or private? If public you need an IEP or 504. We are at a private school so I can't advise you about that process but lots of people on this board can. Your DS' testing profile is almost exactly like my DS, who is also ADHD and dysgraphic. Your DS WM score is quite high though. It makes me scratch my head about the ADHD. The WISC could never be used to diagnose ADHD but ADHD kids are usually low in WM and PS. Just an observation. I am sure the neuropsych went into this fully through other testing. Perhaps this is why his ADHD seems borderline to you.
Your DS is VERY bright and likely both bored and struggling with his normal work. He is likely not getting work challenging enough for his intelligence, especially in math, but getting the answers on paper is very difficult for dysgraphic kids. Along with accommodations he needs an opportunity to work ahead in his areas of strength. No one likes to remediate their weaknesses all the time!
Be sure you lay your groundwork before school starts so you have a plan Day 1. Also, one important lesson I have learned from these boards is that if you can't get enrichment through the school, especially in math, you can easily add that in yourself. Lots of options are available: Art of Problem Solving, Kumon, Singapore, EPGY and ALEKS to name a few. This is the way we have gone to give my DS enrichment.
Those are my two cents for getting started. Good luck!
